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...there, trapped underground at high pressure for the past 3 million years. Getting the hot water to the surface hasn't been easy, and one well had to be abandoned. But Geodynamics now says the flow from 4 km deep is sufficiently strong and hot to run a 1-MW power station by the end of the year - enough to power the drilling-camp site and Innamincka...
...High power costs and their benefits With partner origin energy, a big Australian oil and gas company, Geodynamics now plans to build enough wells to run a 50-MW commercial power plant by 2011. That feat will need much deeper wells and better water flows. If it works, Geodynamics will build more wells to produce 500 MW - about the output of a modern gas-turbine power plant...
...real trick will be extracting enough hot water to make the 50-MW plant work. If the engineering challenges of great depth and heat can be overcome, the company will follow a cookie-cutter approach and build nine more sets of wells to produce 500 MW...
...Australia's other geothermal companies. The most advanced, Petratherm, plans to drill its own well near South Australia's Flinders Ranges later this year and produce commercial amounts of power before Geodynamics does. Petratherm, with projects in Spain and interests in China, already has an agreement to supply 7.5 MW of power to the Beverley uranium mine, 11 km from its drilling site. The company won't go as deep as Geodynamics. Instead, it will try to push its water through 200°C sedimentary rock, just above the hot granites...
Sixty years ago, the U.S. government embarked on a massive reservoir and irrigation project and dammed the upper reaches of the Helmand River. In 1975 the Americans started the second phase, building a powerhouse and installing two 16.5-MW turbines at the dam's base. At the time, the dam provided enough power to light up the country's southern provinces, but they left room for a third turbine in the powerhouse and laid the groundwork for an even larger power station nearby that could bring the total energy capacity of the Kajaki Dam project up to 150 MW--nearly...